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Emergency Microphone Unit
Please read these instructions carefully prior to
operation and keep them for later reference .
Chapters 4 and 5 are specifically intended for
specialist installers . Chapter 6 is intended for
users of this unit .
All operating elements and connections de-
scribed can be found on the fold-out page 3 .
1 Operating Elements
and Connections
1 Hand-held microphone
2 Talk button; keep it pressed for an an-
nouncement
3 Warning indication EMERGENCY; flashes in
an emergency situation
4 Volume control for the siren
5 LED FAULT; lights up when a fault occurs
6 Volume control LEVEL for the microphone
in case of an announcement
7 Switch "Compression" for dynamic limita-
tion of the microphone signal
8 LED "Power / Low Voltage"; lights up as a
power LED and flashes if the supply voltage
is too low
9 Switch for activating / deactivating the
acoustic warning signals
10 Speaker for acoustic warning signals
continuous sound: emergency situation
pulsating sound: fault
11 LED "CPU Error"; lights up with malfunction
of the processor of the microphone unit
12 Headphone jack for connection of head-
phones with an impedance of ≥ 32 Ω to
check a recording
13 Cover plate as a protection against
unau thorized operation of the announce-
ment recorder
14 Switch MODE to select the operating mode
of the announcement recorder
15 Selector switch for the frequency of the
automatic announcement
"1 Time" one-time announcement
"Repeat" continuously repeated announce-
ment
16 Button "Play" to start the reproduction of
a recorded announcement and to stop the
reproduction
17 LED PLAY lights up during the recording and
flashes when reproducing an announcement
18 Volume control for the reproduction of a
re corded announcement
19 Selector switch for the audio source of a
re cording
"P .T .T" hand-held microphone (1)
"EXT" an audio source connected to the
jacks EXT REC INPUT (26)
20 Button "Recording" to start the recording of
an announcement and to stop the recording
21 Button "Erase" to delete an announcement
recorded before
22 LEDs as a level indication of the signal to
be recorded
"SIG" lights up when a signal of sufficiently
high level is available
6
"Clip" lights up when the signal level is too
high; in this case reduce the recording
level with the control (23)
23 Control for the recording level
24 Connection with screw locking for the hand-
held microphone (1)
25 RJ45 jack "OUTPUT" for connection to the
amplifier PA-40120
26 RCA jacks "EXT REC INPUT" for connec-
tion of a signal source for recording an an-
nouncement
27 Connection "E / M TRIGGER" to signal an
emergency situation (e . g . from a fire alarm
system) as plug-in screw terminals
28 Selector switch "SIREN" for the type of siren
sound emitted via the amplifier PA-40120 in
an emergency situation
FLAT first ascending, then steady sound
EU
emergency signal according to
DIN 33 404 / EN 457
Note: A change only becomes effective after
switching on the amplifier again or interrupting
the power supply .
29 Power supply jack (24 V⎓) for low voltage
plug 5 .5 / 2 .1 mm (outside / inside diameter)
with any polarity
30 Opening for the cable guidance from the
rear side
31 Alternative possibility for the cable guid-
ance; remove pre-punched plate if the cables
are to be guided from below
2 Important Notes
The unit corresponds to all relevant directives of
the EU and is therefore marked with
•
The unit is suitable for indoor use only . Protect
it against dripping water and splash water,
high air humidity, and heat (admissible am-
bient temperature range 0 – 40 °C) .
•
For cleaning only use a dry, soft cloth, never
use chemicals or water .
•
No guarantee claims for the unit and no liabil-
ity for any resulting personal damage or mate-
rial damage will be accepted if the unit is used
for other purposes than originally intended, if
it is not correctly connected or operated, or
not repaired in an expert way .
If the unit is to be put out of operation
definitively, take it to a local recycling
plant for a disposal which is not harm-
ful to the environment .
3 Applications
In connection with the 4-zone amplifier
PA-40120, this microphone unit serves for an-
nouncements in emergency situations, e . g . for
alarming or evacuation . It is equipped with a
hand-held microphone with function monitoring
and a recorder for recording an announcement .
The storing of the recording is non-volatile, i . e .
the recording is maintained even in case of
failure of the voltage supply . If an emergency
situation is signalled (e . g . from a fire alarm sys-
tem), after an alarm siren sound the automatic
reproduction of the recording is made via the
amplifier . At the same time the microphone unit
emits a visual and optionally an acoustic warning
signal . A failure of the microphone unit or its
microphone is also signalised to the amplifier
and displayed there .
4 Mounting
Select an optimum mounting place for operat-
ing the unit . At the distance of the mounting
holes on the rear side of the microphone unit
screw four screws or screw hooks into the wall
and suspend the microphone unit there . The
connection cables can be guided through the
opening in the rear side of the housing (30) or
through the lower side of the housing . Remove
the pre-punched plate (31) for guiding the cable
through the lower side .
5 Connections
5.1 Amplifier PA-40120
Connect the RJ45 jack OUTPUT (25) of the
microphone unit, e . g . via the supplied cable,
to the amplifier PA-40120 . The amplifier has
a connection of its own for each of the 4 PA
zones . Therefore, an emergency announcement
can only be heard in the PA zone for which the
microphone unit is connected . The possible
cable length is 1 km as a maximum .
To apply a microphone unit to several PA
zones, the output of the microphone unit has
to be connected in parallel to all desired inputs;
i . e . the conductors of the connection cables
must correspondingly be connected in parallel .
5.2 Additional power supply unit
For connection cables of more than 500 m length
the power supply via the amplifier is not suffi-
.
cient . In this case connect an additional power
supply unit with 24 V (⎓) to the jack EXT IN (29) .
The required low voltage plug has the dimen-
sions 5 .5 / 2 .1 mm (outside / inside diameter) with
any polarity .
5.3 Alarm device
An emergency situation to which the microphone
unit responds with an automatic announcement
in addition to other actions (
signalled via the connection E / M TRIGGER (27) .
Connect here an NO contact (normally open),
e . g . an alarm relay at the output of a fire alarm
system or a basic switch for manual activation .
5.4 Hand-held microphone
Connect the hand-held microphone with its plug
(24) to the jack provided for it and lock it by
fastening the cap nut .
Note: The function of the microphone is permanently
monitored by the microphone unit . A microphone
which is defective or not correctly connected is im-
mediately indicated at the microphone unit and at
the amplifier .
5.5 Audio source with line level
To record an announcement, an external audio
source with line level may be an alternative to
the hand-held microphone (e . g . for taking over
a pre-made announcement) . Connect this audio
source to the RCA jacks EXT REC INPUT (26) .
The jacks are available for stereo signal sources
as L (left) and R (right) . As the microphone unit
operates monophonically, the mono sum results
internally from the stereo signals .
☞
chapter 7), is
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